800811147811 has 4 divisors (see below), whose sum is σ = 800818551432. Its totient is φ = 800803744192.

The previous prime is 800811147769. The next prime is 800811147859. The reversal of 800811147811 is 118741118008.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 800811147811 - 2¹¹ = 800811145763 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (800811141811) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3537121 + ... + 3756706.

It is an arithmetic number, because the mean of its divisors is an integer number (200204637858).

Almost surely, 2^800811147811 is an apocalyptic number.

800811147811 is a deficient number, since it is larger than the sum of its proper divisors (7403621).

800811147811 is a wasteful number, since it uses less digits than its factorization.

800811147811 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7403620.

The product of its (nonzero) digits is 14336, while the sum is 40.

The spelling of 800811147811 in words is "eight hundred billion, eight hundred eleven million, one hundred forty-seven thousand, eight hundred eleven".